On Tue, Apr 01, 2008 at 01:55:36PM -0700, Christoph Lameter wrote: > This results in f.e. the Aim9 brk performance test to got down by 10-15%.
I guess it's more likely because of overscheduling for small crtitical sections, did you counted the total number of context switches? I guess there will be a lot more with your patch applied. That regression is a showstopper and it is the reason why I've suggested before to add a CONFIG_XPMEM or CONFIG_MMU_NOTIFIER_SLEEP config option to make the VM locks sleep capable only when XPMEM=y (PREEMPT_RT will enable it too). Thanks for doing the benchmark work! ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
